police have also released this mug shot of lucas anderson that was arrested last wednesday, garcia was arrested last thursday, also on suspicion of murder. and a fourth suspect, a raven dixon, was arrested earlier this month is has been charged with being an accessory to murder. >>> new this morning an off-road motorcycle collision in antioch has left a 9-year-old boy hospitalized in critical condition. antioch police say he collided with a 15-year-old boy while riding dirt bikes on a vacant lot. he suffered major head injuries. even though he was wearing protective headgear. he was flown to children's hospital oakland for treatment. >>> san francisco investigators are trying to determine the cause after three-alarm fire that ripped through five buildings in the mission district yesterday. parts of five victorian apartment homes were damaged by that fire. more than 40 people were displaced. no residents were hurt. one firefighter was treated for dehydration and an injured shoulder. more than 140 responders were on the scene and quick action is credited with preventing a bigger disaster